Ruby Date ===函数
Date#===()是Date类的一个方法,用于检查两个Date对象是否相等。
语法。Date.===()
参数。日期值
返回:如果两个日期对象相等,则为真,否则返回假
例子 #1 :
# Ruby code for Date.===() method
# loading date
require 'date'
# declaring Date
a = Date.new(2019, 1, 1)
# declaring Date
b = Date.jd(2452004)
# declaring Date
c = Date.ordinal(2019, 12)
# Date
puts "Date a : #{a}\n\n"
puts "Date b : #{b}\n\n"
puts "Date c : #{c}\n\n\n\n"
# === form
puts "Date a === form : #{a === Rational(3, 2)}\n\n"
puts "Date b === form : #{b === b}\n\n"
puts "Date c === form : #{c === Rational(10, 4)}\n\n"
输出:
Date a : 2019-01-01
Date b : 2001-04-04
Date c : 2019-01-12
Date a === form : false
Date b === form : true
Date c === form : false
例子 #2 :
# Ruby code for Date.===() method
# loading date
require 'date'
# declaring Date
a = Date.parse('2019-01-01')
# declaring Date
b = Date.strptime('03-12-2019', '%d-%m-%Y')
# declaring Date
c = Date.commercial(2019, 5, 6)
# Date
puts "Date a : #{a}\n\n"
puts "Date b : #{b}\n\n"
puts "Date c : #{c}\n\n\n\n"
# === form
puts "Date a === form : #{a === Rational(3, 2)}\n\n"
puts "Date b === form : #{b === b}\n\n"
puts "Date c === form : #{c === Rational(10, 4)}\n\n"
输出:
Date a : 2019-01-01
Date b : 2019-12-03
Date c : 2019-02-02
Date a === form : false
Date b === form : true
Date c === form : false